Ive talked to Poppy in passing (he makes the EvenMidi pedals) and he uses absolute position for his knobs.  They are 0-100s anyway.. though he mentined that if Eventide could make the midi into “Catchup” mode that would be better.

I hooked the H9 up to Midi-OX last night, and i was dismayed to find that it hardly sends ANYTHING out the USB bus. 

Which makes me want to know- how does it communicate with the H9 app? And can I translate that information into MIDI in a linux environment? I feel like this can happen.